Dread terrible wickedness when reckless person appears (4-5)

I believe the answer is:

dare-devil

I'm a little stuck... Click here to teach me more about this clue!

'reckless person appears' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'dread terrible wickedness' is the wordplay.
'terrible' indicates an anagram.
'wickedness' becomes 'evil' (synonyms).
'dread' with letters rearranged gives 'dared'.
'dared'+'evil'='DARE-DEVIL'

'when' is the link.

Can you help me to learn more?

(Another definition for dare-devil that I've seen is " Person who takes risks".)

I've seen this clue in The Telegraph.

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